Apparently, mobile companies are authorized to charge you if you do not use your mobile regularly

[Sushubh]

 

[x720]

Perfect win win for them. They don't have to disconnect unused numbers having balance, hence keeping subscriber numbers up. At the same time, they get to earn too

EDIT

Its within the framework of the rules, so to speak.

Mobile numbers having balance of Rs 20 cannot be deactivated - timesofindia-economictimes

 

[igloo]

Best way to avoid this is keep recharging 10rs every month.

 

[xyx2000]

It is better to pay Rs 20 than loose your unused no in most cases , this rule was brought for the benefit of the customers .

 

[Sushubh]

So it is more of a convenience charge?